Improved error when called without new
Improved error when called without new

Fixes #39
djedi23/meteor-pages,Wen777/meteor-pages,TFarla/meteor-pages,mnzaki/meteor-pages,TFarla/meteor-pages,Ergasti/meteor-pages,mnzaki/meteor-pages,djedi23/meteor-pages,alethes/meteor-pages,electronifie/meteor-pages,Ergasti/meteor-pages,electronifie/meteor-pages,alethes/meteor-pages